-er -up ddd dde ddf ddo ddp ddr dds ddt ddu de- ded dee def deo dep der des det deu dfd dfe dff dfo dfp dfr dfs dft dfu dod doe dof doo dop dor dos dot dou dpd dpe dpf dpo dpp dpr dps dpt dpu drd dre dro drp drr drs drt dru dsd dse dsf dso dsp dsr dss dst dsu dtd dte dtf dto dtp dtr dts dtt dtu dud due duf duo dup dur dus dut ed- edd ede edf edo edp edr eds edt edu eed eee eef eeo eep eer ees eet ef- efd efe eff efo efp efr efs eft eo- eod eoe eof eoo eop eor eos eot eou ep- epd epe epf epo epp epr eps ept epu erd ere erf ero erp err ers ert eru es- esd ese esf eso esp esr ess est esu etd ete etf eto etp etr ets ett etu eu- eud eue euf eup eur eus eut fdd fde fdf fdo fdp fdr fds fdt fdu fed fee fef feo fep fer fes fet feu ffd ffe fff ffo ffp ffr ffs fft ffu foe fof foo fop for fos fot fou fpd fpe fpo fpp fpr fps fpt fpu frd fre frf fro frp frr frs frt fru fsd fse fsf fso fsp fsr fss fst fsu ftd fte ftf fto ftp ftr fts ftt ftu fud fue fuf fuo fup fur fus fut fuu odd ode odf odo odp odr ods odt odu oed oee oef oeo oep oer oes oet of- ofd ofe off ofo ofp ofr ofs oft ofu oo- ood oof ooo oop oor oos oot op- opd ope opf opo opp opr ops opt or- ord ore orf oro orp orr ors ort oru os- osd ose osf oso osp osr oss ost osu ot- otd ote otf oto otp otr ots ott otu ou- oud oue ouf ouo oup our ous out p-p pdd pde pdf pdo pdp pdr pds pdt pdu ped pee pef peo pep per pes pet peu pfd pfe pff pfo pfp pfr pfs pft pfu pod poe pof poo pop por pos pot pou ppd ppe ppf ppo ppp ppr pps ppt ppu prd pre prf pro prp prr prs prt pru ps- psd pse psf pso psp psr pss pst psu pt- ptd pte ptf pto ptp ptr pts ptt ptu pud pue puf pup pur pus put puu rdd rde rdf rdo rdp rdr rds rdt rdu re- red ree ref reo rep rer res ret reu rfd rfe rff rfo rfp rfr rfs rft rfu rod roe rof roo rop ror ros rot rou rpd rpe rpf rpo rpp rpr rps rpt rpu rrd rrf rrp rrr rrs rrt rru rsd rse rsf rso rsp rsr rss rst rsu rtd rte rtf rto rtp rtr rts rtt rtu rud rue ruf ruo rup rur rus rut ruu sdd sde sdf sdo sdp sdr sds sdt sdu se- sed see sef seo sep ser ses set seu sfd sfe sff sfo sfp sfr sfs sft sfu sod soe sof soo sop sor sos sot sou spd spe spf spo spp spr sps spt spu sr- srd sre srf sro srp srr srs srt ss- ssd sse ssf sso ssp ssr sss sst ssu std ste stf sto stp str sts stt stu sud sue suf suo sup sur sus sut suu tdd tde tdf tdo tdp tdr tds tdt tdu te- ted tee tef teo tep ter tes tet teu tfd tfe tff tfo tfp tfr tfs tft tfu to- tod toe tof too top tor tos tot tou tpd tpe tpf tpo tpp tpr tps tpt tpu trd tre trf tro trp trr trs trt tru tsd tse tsf tso tsp tsr tss tst tsu ttd tte ttf tto ttp ttr tts ttt ttu tud tue tuf tuo tup tur tus tut tuu udd ude udf udo udp udr uds udt udu ued uee uef uep uer ues uet ufd ufe uff ufo ufp ufr ufs uft ufu uod uoe uoo uop uor uos uot up- upd upe upf upo upp upr ups upt upu ur- urd ure urf uro urp urr urs urt uru usd use usf uso usp usr uss ust usu utd ute utf uto utp utr uts utt utu uue uur uus uut uuu